Durco pressure leaf filters — originally manufactured by the Duriron Company, now part of Flowserve — are widely installed in chemical, petrochemical, and food-processing plants. These systems rely on replaceable filter bags mounted on permanent metal leaves inside a pressure vessel. When the bags reach end of life, operators need a replacement that matches the leaf geometry, collar dimensions, and process requirements exactly. R+F FilterElements manufactures compatible filter bags for Durco horizontal and vertical pressure leaf filters.
🔑 Key Takeaways
- R+F FilterElements supplies aftermarket filter bags for Durco (Flowserve) pressure leaf filter systems.
- Bags are sewn to your exact leaf dimensions and collar profile.
- Available in monofilament PP and PET for clarity filtration, plus multifilament for pre-coat and body-feed applications.
- Compatible with both horizontal and vertical Durco configurations.
🏭 Durco Pressure Leaf Filters — Aftermarket Fabric Supply
Durco PLF systems are designed for batch clarity filtration with low solids loading. Many installations use diatomaceous earth (DE) or perlite as a pre-coat or body feed. The filter bag must support pre-coat build-up without breakthrough, while allowing high flow rates during the filtration cycle.
We supply Durco-compatible filter bags in monofilament polypropylene and polyester — with weave constructions chosen for the right balance of retention, permeability, and pre-coat adhesion. Each bag is sewn to the leaf dimensions of your specific unit.
| Configuration | R+F product | Materials | Application |
|---|---|---|---|
| Horizontal Durco PLF | RF-PLF Series filter bags | Monofilament PP, PET | Chemical, food, and beverage clarity filtration |
| Vertical Durco PLF | RF-PLF Series filter bags | Mono-/multifilament PP, PET | Space-constrained or intermittent-flow installations |
Rule of thumb: For pre-coat applications, choose a fabric with enough surface texture to hold the initial DE or perlite layer, but smooth enough to allow clean cake discharge when the cycle ends.
Model number, leaf diameter, number of leaves, and vessel orientation (horizontal/vertical).
Drawing, old bag, or photographs with collar and neck measurements.
Geometry, polymer, and delivery confirmed within 48 hours.
Bags arrive ready to mount — no trimming required.
R+F FilterElements GmbH is an independent manufacturer of filter fabrics and filter elements. Durco and Flowserve are trademarks of their respective owners. We are not affiliated with, endorsed by, or authorised by Flowserve Corporation. Product names are used solely to describe compatibility.
📩 Need Help Choosing the Right Fabric?
Our technical team at R+F FilterElements can help you find the perfect filter fabric for your specific application. Get in touch for a free consultation — we will recommend the right solution based on your machine, process, and operating conditions.